Context: I was working on a a project (12 tracks) with some effects added. iOS 10.3.1 iPad Pro 12.9 128 gb. Auria Pro 2.10.

Steps to bug:
1 - Add BIAS FX to a guitar track
2 - Freeze guitar track with bias
3 - Record volume automation
4 - Unfreeze track to tweak effect
5 - Try to freeze it again with the Read Automation flag on.
The progress bar goes on for a little and then Auria stop Responding. The only way to close it is double click home button and swipe it up.

The only way to properly freeze it is to disable the read automation flag. (You can enable it back later and it works just fine).